Me: I guess those videos I uploaded for our site are pretty popular, because a lot of people are subscribing to our YouTube channel now. We should upload more for them to see.

S (My company’s webmaster): 81 subscribers! And we didn’t ask them to subscribe, or tell them how.

Me: They must just be people who are into YouTube. Tubivores?

S: Did you just make that up? I’m using that.

I did, and Google reveals that two other people have used the word. One of them is the title of a deviantART image that features tubes, and the other is a username. There is also, apparently, a robot named “The Tubavore”.

So, I hereby claim “Tubivore” meaning a person who is a power user on YouTube: one who views videos, maybe uploads them, and knows how to search and subscribe to videos and channels of interest.